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ALSA: dice: cache stream formats at current mode of sampling transmission frequency

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In former commits, proxy structure get members for cache of stream
formats. This commit fills the cache with stream formats at current mode
of sampling transmission frequency.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2018-05-02 19:16:42 +09:00 committed by Takashi Iwai
parent b7fd3d64e7
commit b60152f750
3 changed files with 93 additions and 0 deletions
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86
sound/firewire/dice/dice-stream.c
View File

@ -30,6 +30,34 @@ const unsigned int snd_dice_rates[SND_DICE_RATES_COUNT] = {
[6] = 192000,
};
int snd_dice_stream_get_rate_mode(struct snd_dice *dice, unsigned int rate,
enum snd_dice_rate_mode *mode)
{
/* Corresponding to each entry in snd_dice_rates. */
static const enum snd_dice_rate_mode modes[] = {
[0] = SND_DICE_RATE_MODE_LOW,
[1] = SND_DICE_RATE_MODE_LOW,
[2] = SND_DICE_RATE_MODE_LOW,
[3] = SND_DICE_RATE_MODE_MIDDLE,
[4] = SND_DICE_RATE_MODE_MIDDLE,
[5] = SND_DICE_RATE_MODE_HIGH,
[6] = SND_DICE_RATE_MODE_HIGH,
};
int i;
for (i = 0; i < ARRAY_SIZE(snd_dice_rates); i++) {
if (!(dice->clock_caps & BIT(i)))
continue;
if (snd_dice_rates[i] != rate)
continue;
*mode = modes[i];
return 0;
}
return -EINVAL;
}
/*
* This operation has an effect to synchronize GLOBAL_STATUS/GLOBAL_SAMPLE_RATE
* to GLOBAL_STATUS. Especially, just after powering on, these are different.
@ -484,6 +512,64 @@ void snd_dice_stream_update_duplex(struct snd_dice *dice)
}
}
int snd_dice_stream_detect_current_formats(struct snd_dice *dice)
{
unsigned int rate;
enum snd_dice_rate_mode mode;
__be32 reg[2];
struct reg_params tx_params, rx_params;
int i;
int err;
/*
* Available stream format is restricted at current mode of sampling
* clock.
*/
err = snd_dice_transaction_get_rate(dice, &rate);
if (err < 0)
return err;
err = snd_dice_stream_get_rate_mode(dice, rate, &mode);
if (err < 0)
return err;
/*
* Just after owning the unit (GLOBAL_OWNER), the unit can return
* invalid stream formats. Selecting clock parameters have an effect
* for the unit to refine it.
*/
err = ensure_phase_lock(dice);
if (err < 0)
return err;
err = get_register_params(dice, &tx_params, &rx_params);
if (err < 0)
return err;
for (i = 0; i < tx_params.count; ++i) {
err = snd_dice_transaction_read_tx(dice,
tx_params.size * i + TX_NUMBER_AUDIO,
reg, sizeof(reg));
if (err < 0)
return err;
dice->tx_pcm_chs[i][mode] = be32_to_cpu(reg[0]);
dice->tx_midi_ports[i] = max_t(unsigned int,
be32_to_cpu(reg[1]), dice->tx_midi_ports[i]);
}
for (i = 0; i < rx_params.count; ++i) {
err = snd_dice_transaction_read_rx(dice,
rx_params.size * i + RX_NUMBER_AUDIO,
reg, sizeof(reg));
if (err < 0)
return err;
dice->rx_pcm_chs[i][mode] = be32_to_cpu(reg[0]);
dice->rx_midi_ports[i] = max_t(unsigned int,
be32_to_cpu(reg[1]), dice->rx_midi_ports[i]);
}
return 0;
}
static void dice_lock_changed(struct snd_dice *dice)
{
dice->dev_lock_changed = true;

4
sound/firewire/dice/dice.c
View File

@ -199,6 +199,10 @@ static void do_registration(struct work_struct *work)
dice_card_strings(dice);
err = snd_dice_stream_detect_current_formats(dice);
if (err < 0)
goto error;
err = snd_dice_stream_init_duplex(dice);
if (err < 0)
goto error;

3
sound/firewire/dice/dice.h
View File

@ -201,11 +201,14 @@ void snd_dice_transaction_destroy(struct snd_dice *dice);
#define SND_DICE_RATES_COUNT 7
extern const unsigned int snd_dice_rates[SND_DICE_RATES_COUNT];
int snd_dice_stream_get_rate_mode(struct snd_dice *dice, unsigned int rate,
enum snd_dice_rate_mode *mode);
int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate);
void snd_dice_stream_stop_duplex(struct snd_dice *dice);
int snd_dice_stream_init_duplex(struct snd_dice *dice);
void snd_dice_stream_destroy_duplex(struct snd_dice *dice);
void snd_dice_stream_update_duplex(struct snd_dice *dice);
int snd_dice_stream_detect_current_formats(struct snd_dice *dice);
int snd_dice_stream_lock_try(struct snd_dice *dice);
void snd_dice_stream_lock_release(struct snd_dice *dice);